.btn-yellow {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #000;
    font-weight: bold;
}

.btn-yellow:hover,
.btn-yellow:focus {
    background-color: #e0a800;
    border-color: #d39e00;
    color: #000;
}

.btn-yellow:active {
    background-color: #d39e00;
    border-color: #c69500;
    color: #000;
}